Shoe-bottom-coating machine



' W. L. M KENZIE SHOE BOTTOM COATING MACHINE July 25,

5 Shets-Sheet 1 Filed Feb. 27, 1942 July 25, 1944.

W. L. M KENZIE SHOE BOTTOM COATINGMACHINE 3 Sheets-Sheet 2 Filed Feb. 27, 1942 July 25, 1944. w MacKENZlE 2,354,326

T SHOE BOTTOM COATING MACHINE 3 Sheets-Sheet 3 Filed Feb. 27, 1942 Patented July 25, 1944 SHOE-BOTTOM-COATING MACHINE Wilbur L. MacKenzie, Beverly, Mass, assignor to United Shoe Machinery Corporation, Fleming-- ton, N. J., a corporation. of.New Jersey Application February 27, 1942, Serial No. 432,583

17 Claims.

This invention relates to shoe-bottom-coating machines and is herein illustratively described in connection with a machine particularly adapted for the application of sole-attaching cement to welt shoes which are to have spring heels, it being an improvement upon the machine shown in Letters Patent of the United States, No. 2,100,341, granted November 30, 1937, upon my application.

In applying a band of sole-attaching cement to the margins of the bottoms of welt shoes having a spring-heel lift or wedge piece, it is found desirable to apply the coating around the whole periphery of the shoe bottom, including the wedge piece. The patented machine has a welt-supporting finger beneath the applying member, and, in the use of the machine for this work, it is found that the welt-supporting finger catches in the welt crease as the point is reached where the crease is restricted because the end of the, Walt underlies the'wedge piece, making it neces-' sary to stop the machine and to start it again for the traverse of the rear end of the shoe. This slows down the operator and is an impractical procedure because of-the double layer of cement at this point.

Accordingly, one object of the invention is to provide means for disengaging the welt-supporting finger when it is not wanted, as at the heel end,rwithout interfering with the operation of the machine around the balance of the periphery of. the shoe such as the forepart thereof.

Aieature .of the invention resides in means for moving a work-supporting member out of operative position in the'direction of advance of the work. vMorev specifically, such a means may be the same device which brings the welt-supporting member into operative position as at the beginning of the operation and, as illustrated. it comprises a treadle movable to advance the carrier which supports the welt-supporting member and whichtreadle may be later moved still farther to cause the withdrawal of the support.-

ing'member.

i In one specific embodiment of the invention, the treadle, which. is utilized for opening the valve to permit the flow of cement and for moving the welt-supporting finger and the feed wheel into position, is also utilized to cause withdrawal of the welt finger without interfering with continued operation upon the work.

Another feature of the invention resides in the provision of mechanism for-rotating the weltsupporting finger to its normal operating position upon the reverse movement of the treadle 7 illustrating the relation thereto of the nozzlean'cl which takes place when the'tr'aver'se' of the shoe has been completed and the now of cementis to be stopped. V r

Still another feature ofthe invention resides in means associated with the operator-controlled device which initially moves" the work support into operative position, and later changes the position of the work support, which willindicate to the operator the completion j'oflthe initial move ment of this device. e I

These and other features of'the invention will best be understood from a consideration of thef following specification taken in connection with the accompanying drawings, in'which v j Fig. 1 is aside elevation of] the head of the machine withthe nearer side plate of the frame removed to show the internalnie'chanism; Fig. 2 is a detailed section on'a larger'fscal'e to show a portion of the treadle andits supporting springs; Fig. 3 is a view similar to Fig'. "1 but with the parts in the position which they occupy when cementing around the wedge piece;

Fig. 3a is a small scale iew of 'the treadle:

mechanism supported on the machinersupporting column; t I ,Fig. 4 is a detailed plan w of a StopJWhich is attached to a rack for limiting the movement. of the latter; 1 M Fig. 5 is an elevation, partly in section, and shown on a larger scale, of a portion of the ;ma chine at the beginning of the traversing move.- ment of the shoe; v

Fig. 6 is a similar view showingthe machine when operating uponv the-spring lift-.or wedge piece and with the welt'fingerwithdrawn;

Fig. '7 is a plan view ofthe bottom showing ashoe which has been partiallycementedand the withdrawn welt-supporting-finger; and- Fig. 8 is a side elevation of the same shoe at a point in the coating operation just preceding the withdrawal of thewelt finger. w

As in the patented machine, the machine herein illustrated comprises a frame 10 mounted ona column I2 and supporting a cement tank M from which the coating material is removed by a pump lBand forced through afiexible hose '18 to a rubber extruding. nozzle 20, this outflow of cement being controlled by means of a rotary,

work-supporting feed wheel 32 which is journaled in an arm 34 carried on parallel links 36, 38. The latter of these links has a slotted arm 40 connecting it to a pin upon a collar 42 slidable on the treadle rod and normally held against a stop collar 44 by a compression spring 46. Many of the operating parts at the head of the machine are mounted between two side plates of the frame. In the drawings, the nearer side plate has been removed and only the plate 48 is shown.

It will be realized that the level of the wedge piece or spring-heel lift 50 (Fig. 8) on the shoe S is considerably higher than that of the adjacent welt 52 and, since the yield of the nozzle can account for only a slight variation in heightwise contour without interfering with its proper operation, it has been found desirable to provide a spring 54 which surrounds a rod on the frame and acts to tilt an arm 56 pivoted at 58 in the frame. On this am 56, the nozzle 20 is adjustably supported, as in the patented machine. Depression of this nozzle-supporting arm 56, compressing the spring 54, is effected by means of an upward extension 60 of the treadle rod 28 which operates upon the arm 56 through a light spring 82. As a consequence, when the level of the wedge piece 50 is. reached, the nozzle-supporting arm may tilt against the action of the light spring 62 and, in this tilting movement, it will be assisted by the: spring 54-.

The opening of the valve 22 upon the depression of the treadle 26- is effected, as in the patented machine, through a slotted link 64 attached to the treadle rod and operating through a twoarmed lever 66-, a. link 68 and a lever I (Fig. 3) attached to an extension 12 of the valve rod 24, which extension is journaled in a depending portion I4 of the arm 56.. The movement of the treadle to open this valve is opposed by a spring 18 which serves to. close the valve when the treadle is released, and a slot 18 in the link 64 makes a lost-motion connection between the treadle rod and the valve. so that the cement will not start to flow until the driven work-supporting wheel 32' hasbeen moved into contact with the shoe S, as in Fig. 3.

A finger 80 to support the flexible welt at a point directly beneath the nozzle, as shown in Fig. 5,, is rotatably mounted in a carrier 82 which is slotted so that it may slide upon two bolts 84, 86 extending through the frame. Sliding movement of this carrier from the position shown in Fig. 1 to that shown in Fig. to bring the welt-supporting finger 80 out into operative. position is effected by toggle links 90 and 92 interposed between the treadle rod 28 and the carrier 82. The link 90 is pivoted on the frame at 94 and pivotally joined at its inner end to the rod 28 and at its outer end is pivotally connected to the link 92 which is similarly fastened to the carrier 82'. For reasons fully explained in the abovementioned patent, it is desirable to rotate the welt-supporting finger as it is moved bodily into operative position and, to this end, the finger 80 is mounted on a shaft 96 (Fig. 6) rotatable in the; carrier 82 and is provided with a toothed segment 98Which meshes with a rack I00 which, in the patented machine, is bolted to the frame. Here, however, this rack is mounted for sliding movement in a groove I02 (Fig. 5) formed in the side plate 48 of the frame and is normally held, pushed out to an extended position against the action of a retracting spring I04, by means of a latch I06 engaging a pin I08 on the rack. This latch is pivoted on the bolt 84 and has an operatin arm II0 which overlies the bolt 86 and is Lil curved upwardly to the right. The latch is urged downwardly into engagement with the pin I00 by means of a leaf spring II2 supported in a slot in the bolt 85. The retracting spring I04 is, at its outer end, connected to a stud II4 (Fig. 4) which is threaded in the back side of the rack I00 and passes through a slot in a plate H5 adjustably held in position on the far side of the rack by a screw II8. This plate has an inclined stop I20 for contact with an inclined surface I2I on the frame plate 48 when the latch is released and the rack is drawn inwardly by the spring. The other end of the spring I04 is connected to a depending pin I22 formed on a thin plate I24 supported on the bolts 84, 88 back of the frame plate 48.

A cam finger I30, acting on the arm IIO of the latch to lift, it, is secured to the link 90 and the upper end of this finger may be moved from the position shown in Fig. 5 to the position shown in Fig. 6 by a slight additional depression of the treadle when it is desired to release the latch and thereby to cause the welt-supporting finger to be. moved, as the spring I04 pulls in the rack, and turns the segment 98 and hence the finger, from the dotted-line position, shown in Fig. '7, to the full-line position where it is out of engagement with the work. It Will be noted that this movement of the finger is in the same direction as the direction of movement of the work, indicated by an arrow, so that there will be no frictional drag exerted by the work to hold the finger from turning. Having thus withdrawn the welt finger, it is possible to continue the cementing operation around the margin of the wedge piece 50 to the starting point a near the breast line on the other side of the shoe. It will be noted from Figs. 6 and 1 that the curved surface I32 upon the cam I30 lies closely adjacent to but not quite touching a projecting pin I34 upon the rack I00 when the latter is in its inner position, as determined by the adjustment of the stop I20 (Fig. 4). Accordingly, when the treadle is released to be raised by its spring I40 (Fig. 2)

. and the toggle broken, the cam surface I32 will contact the pin I34 and push the rack to the left into starting position where it will be reengaged by the latch I06, as indicated in Figs. 1 and 5.

To make it easier for the operator to move the treadle down part way to the operating position shown in Fig. 5 and then subsequently to continue that movement for a slight additional distance in the downward direction to the position shown in Fig. 6, an arrangement has been provided which is shown in Fig. 2. This includes a guide I36 for a rod I31 which is attached to the treadle 26 by a link. I39, and this guide is attached to a lower portion of the column I2 by means of a stud I38 to the inner end of which the treadle spring I40 is attached. In the rod guide, there is a threaded sleeve I42 forming an adjustable abutment for the lower end of a stiff spring I44. The upper end of this spring, in the position shown in Fig. 2 when the treadle is raised, supports the lower end of a sleeve I48 which has a flange I48 at its upper end adapted to be engaged by lock nuts I50 on the rod I31 as the treadle reaches the end of its normal movement. This will make it easy for the operator to depress the treadle originally to the position of the rod shown in Fig. 5 against the tension of the spring I40. At this point, however, the lock nuts I50 will contact the flange I 48 of the sleeve I46 and,if the treadle. is to be moved further, they will move the sleeve against the rather stifi spring I44. This additional resistance to the'movement' of the treadle will be readily detectable' by' the operator and enable him to hold the treadle rod depressed in the Fig. 5 position until the operating point I; (Figs-7 and 8) is reached. 'I'hen,upon a slight additional downward movement of the treadle, the cam I30 will release the latch N16 (Fig. 6) and allow the welt-supporting'finger 8|] to be turned away from the work into the" position shown in Figs 3, 6 and-'7; From that point,"

and on around the margin of the wedge heel piece 50, the treadle will be kept in its fully depressed position and, when the starting point a has'been reached, the treadle will be released, shutting the valve 22, removing the driven feed-wheel work support 32 and, as the shoe is taken: out of thewa'y, permitting the rising treadle to. cause the cam' I30 to push out the rack I and rotate the welt-finger-work-support 80 back into the starting position shown in Fig. 1.

In presenting a piece of work to the machine, the o'perator will stand facing the machine, at the side shown in Fig. l, and the toe end of the shoe will be pointed over his right shoulder as he brings the welt adjacent to the heel-breast line at the pOiIllLG. (Fig. 7) and to overlapping engagement with the welt-supporting finger 80., Then, as he depresses the treadle, the welt fin ger will be moved outwardly and rotated into a position such as that shown in Fig. and atthe,

same time the driven work-supporting roll 32will' bemoved outwardly into engagement with the side of the shoe, as shown in Fig. 5. Atthe completion of the initial downward movement of the treadle rod where the toggle 9!], 92 is straight, as in Fig. 5, the valve 22 will be opened and the cementing operation will becarried around the forepart of the shoe S. Then, as previously explained, when the point 11 is reached where the welt finger may not move readily through the,

. rand crease, the treadle will be still further depressed to release the latch I06 and cause the work-supporting finger 8!! to be moved, by the spring-actuated rack I00, to the position shown in full lines in'Fig. 'I, and where it is out-of con-- tact with the work, whereupon the operation is continued around the periphery of the .wedge piece 50 at the heel end of the shoe.

Having thus described m invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a machine for operating upon the bottoms of shoes, a work-supporting member past which the work is moved as the shoe bottom is "3. 'In a machine for operating upon the bottoms of'shoeswhich are provided with welts, a welt-supporting member, a slidable carrier in whichsaid member is rotatably supported, means operating to turn the welt-supporting member into operative position upon bodily movement of its carrier, and releasable means for turning said welt-supporting member out of operative position. 1 4. In a shoe-bottom-coating machinaan extruding nozzle,'a movably mounted worksupport' the holding *m'eans causing withdrawal of said work support but leaving the nozzle-controlling valve substantially unmoved.

5.-In a shoe-bottom-coating machine, an ex truding nozzle, a movably mounted work support,

a driven work support movable bodil'yinto and out of operative position, releasable means holding one of said work supports in engagement with the work, and treadle-operated means controlling the flow of coating material to said nozzle and for moving said driven work support bodily, said means being connected to release one of said work supports but leaving the nozzle controlling means as it was.

' 6. In a shoe-bottom-coating machine, an extruding nozzle, a movably mounted work support, a driven work support movable bodily into and out of operative position, releasable means holding one of said work supports in engagement with the work, and treadle-operated means for bodily moving said driven work support, said means being connected to release one of said work supports'but leaving the other work support as it was. '7. In a shoemottom-coating machine, an extruding nozzle, a movably mounted work support, spring-'operatedmeans for moving said support away fr m the'work, a latch resisting movement of said means, a driven Work support movable bodilyfinto and out of operative position, a. treadle movablefin one direction to controlthe flow of coating material to said nozzle and'to bodily move said driven work'support, and connections treated, means to move the work-supportin member in the direction of advance of the work to brin said member into operative engagement with the work, and means for moving said worksupporting member further in the same direction to carry it out of operative engagement with the work.

2. In a machine for operating upon the bottoms of shoes which are provided with welts, a feed wheel contacting the side of a shoe driven to advance the work approximately horizontally away from the operator, a welt-supporting member, a slidable carrier in which said member is movably supported, means operating to move the welt-supporting member under the welt in the direction of advance of the work upon bodily movement of its carrier, and releasable means for moving said welt-supporting member in the same direction and to a position away from the work.

between the treadle and the latch to effect the withdrawal of one of said work supports but leaving the other work support as it was.

8. In a shoe-bottom-coating machine, a work support, a movable carrier in which said work support is movably mounted, normally stationary means engaging the work support for effecting movement of it relative to its carrier in one direction when its carrier is moved, and operatorcontrolled spring means for moving said normally stationary means thereby to cause a reverse movement of the work support,

9. In a shoe-bottom-coating machine, an applying member, a member for supporting the work opposite the applying member, means for rotatably supporting said work supporting member, a slidably mounted rack geared to said work supporting member, a spring for moving said rack in one direction, and a latch for releasably holding the rack against movement under the tension of the spring.

10. In a shoe-bottom-coating machine, an applying member, a member for supporting the work opposite the applying member, means for rotatably supporting said work support, a slidably mounted rack geared to said work support.

a spring for moving said rack in one direction, retaining means tov hold the rack against said spring, and a treadle-operated member movable in one direction to operate the retaining means to release the rack to the actionpf the spring and movable in the other direction to return the rack to its initial position.

11. In a shoe-bottom-coating machine, an applying member, a member for supporting the work opposite the applying member, means for rotatably supporting said work support, a slidably mounted rack geared to said work support, a spring for moving said rack in one direction, a latch for holding said rack against the tension of the spring, and an operator-controlled cam member movable in one direction to release said latch and movable in the other direction to return said rack to latched position.

12. In a shoe-bottom-coating machine, an applying member, a work support adapted to be positioned adjacent to said applying member, a movable carrier for said work support to carry it bodily to and away from the applying member, means for rotatably supporting the work support in said carrier, a valve controlling the flow of coating material to said applying member, treadle-operated means movable in one direction to bring the work support into operative position and to open said valve, means for efi'ecting rotative movement of the work support when in its operative position, and means operated by further movement'of the treadle-operated means in the same direction for causing said rotative movement.

13. In a shoe-bottom-coating machine for welt shoes, an extruding nozzle, a valve controlling the fiow of coating material to said nozzle, a driven work support, a movable carrier for said work support, a Welt-supporting finger, a slidable carrier in which said finger is rotatably mounted, a rack slidably mounted in said machine and geared to said finger, a spring operating to move said rack in one direction, a latch for holding said rack against said spring, a treadle for opening said valve and moving said work supports into position adjacent to said nozzle, and cam means connected to said treadle for releasing said latch to permit the spring to turn the Welt support out of engagement with the work.

14. In a shoeebottom-coating machine for welt shoes, an extruding nozzle, a valve controlling the flow of coating material to said nozzle, a driven work support, a movable carrier for said work support, a welt-supporting finger, a slidable carrier in which said finger is rotatably mounted, a rack slidably mounted in said machine and geared to said finger, a spring operating to move said rack in one direction, a latch for holding said rack against said spring, a treadle foropening said valve and moving said work supports into position adjacent to said nozzle, and cam means connected to said treadle operative upon movement in one direction to release said latch to turn the welt support out of engagement with the work, said cam means being operative upon movement in the reverse direction to return said rack to latched position.

15. In an extrudingmachine, a nozzle, a, valve controlling the fiow of coating material to said nozzle, a pivoted support for said nozzle, spring means for raising said support against the action of gravity, a treadle controlling said valve, and a spring connection between said treadle and said nozzle support operative upon actuation of the treadle to bring said nozzle down against the work and to open said valve.

16. vIn a shoe-bottom-coatin machine, an applying member, a work-supporting member movable bodily initially into position to support a piece of work beneath said applying member, operator-controlled means for causing said bodily movement of the work support, means operable upon further movement of said operator-controlled means to cause a change in the operative position of the work-supporting member, and means arranged to inform the operator of the completion of the initial movement of said operator-controlled means.

17. In a shoe-bottom-coating machine, an applying member, a work-supporting member movable bodily into position to support a piece of work beneath said applying member, a treadle for causing said bodily movement of the work support, means operable upon further movement of the treadle to cause a change in the operative position of the work-supporting member, a spring resisting movement of said treadl throughout its range of movement, and another spring also resisting said treadle during said further movement.

WILBUR L. MACKENZIE. 

